According to one embodiment, an image processing apparatus includes a memory and one or more processors. The one or more processors are electrically connected to the memory, and calculate blur correction information to make a blur of a first shape of an object approach a blur of a second shape of the object. The first shape of the object is contained in a first component image of one image. The second shape of the object is contained in a second component image of the one image. The one or more processors calculate a distance between an imaging device and the object based on an image distance when the one image is captured and the blur correction information. The image distance is a distance from a lens up to an image forming surface of the object.
Legal claims defining the scope of protection, as filed with the USPTO.
1. An image processing apparatus comprising: a memory; and one or more processors electrically connected to the memory and configured to calculate blur correction information to make a blur of a first shape of an object approach a blur of a second shape of the object, the first shape of the object being contained in a first component image of one image, the second shape of the object being contained in a second component image of the one image; select one shape model from among two or more shape models; select one temporary image distance from among two or more temporary image distances, an image distance being a distance from a lens up to an image forming surface of the object, the image distance being variable; and calculate a distance between an imaging device and the object based on the blur correction information and the selected image distance at which a three-dimensional shape of the object obtained based on the distance between the imaging device and the object has a correlation to the selected shape model compared to the other shape model.
2. The image processing apparatus of claim 1 , wherein the two or more shape models include at least one of a model formula indicating a flat surface and a model formula indicating a curved surface.
3. The image processing apparatus of claim 1 , wherein the one or more processors are configured to select the one shape model based on an instruction of a user.
4. The image processing apparatus of claim 1 , wherein the one or more processors are configured to: recognize the object; and select the one shape model based on the result of the recognition.
5. The image processing apparatus of claim 1 , wherein the one or more processors are configured to output the distance between the imaging device and the object in a case where a matching degree between the three-dimensional shape and the selected shape model is larger than a threshold.
6. The image processing apparatus of claim 1 , wherein the one or more processors are configured to change the image distance and calculate the distance between the imaging device and the object in a case where a matching degree between the three-dimensional shape and the selected shape model is less than a threshold.
7. The image processing apparatus of claim 1 , further comprising a storage device which stores a table or a relational expression indicating a relation among the image distance, the blur correction information, and a distance between the imaging device and the object; and the one or more processors are configured to calculate a distance between the imaging device and the object using the table or the relational expression.
8. The image processing apparatus of claim 7 , wherein the one or more processors are configured to generate, using a first table or a first relational expression and a second table or a second relational expression, a third table or a third relational expression.
9. A distance measuring apparatus comprising: the image processing apparatus of claim 1 ; the imaging device; and a controller configured to adjust the image distance of the imaging device.
10. A processing system comprising: the image processing apparatus of claim 1 ; and an output device configured to output character information contained in an image obtained by correcting a shape of the object based on the distance between the imaging device and the object.
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February 28, 2018
February 25, 2020
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